* {
    margin: 0;
    padding: 0;
}

body {
    // 100%窗口高度
    height: 100vh;
    // 弹性布局 居中
    display: flex;
    justify-content: center;
    align-items: center;
    // 渐变背景
    background: linear-gradient(200deg, #e3c5eb, #a9c1ed);
    // 溢出隐藏
    overflow: hidden;
}

.container {
    // 相对定位
    position: relative;
    z-index: 1;
    background-color: #fff;
    border-radius: 15px;
    // 弹性布局
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 350px;
    height: 500px;
    // 阴影
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.tit {
    font-size: 26px;
    margin: 65px auto 7px auto;

}

.container input {
    width: 280px;
    height: 30px;
    text-indent: 8px;
    border: none;
    border-bottom: 1px solid #ddd;
    outline: none;
    margin: 12px auto;
}

.container button {
    width: 280px;
    height: 40px;
    margin: 35px auto 40px auto;
    border: none;
    background: linear-gradient(-200deg, #fac0e7, #aac2ee);
    color: #fff;
    font-weight: bold;
    letter-spacing: 8px;
    border-radius: 10px;
    cursor: pointer;
}

.container button:hover {
    background: linear-gradient(-200deg, #aac2ee, #fac0e7);
    background-position-x: -280px;
}

.container span {
    font-size: 14px;
}

.container a {
    color: plum;
    text-decoration: none;
}

ul li {
    position: absolute;
    border: 1px solid #fff;
    background-color: #fff;
    width: 30px;
    height: 30px;
    list-style: none;

}

.square li {
    top: 40vh;
    left: 60vw;
    // 执行动画：动画名 时长 线性的 无限次播放
    animation: square 10s linear infinite;
    opacity: 0; 
}

.square li:nth-child(2) {
    top: 80vh;
    left: 10vw;
    // 设置动画延迟
    animation-delay: 2s;
}

.square li:nth-child(3) {
    top: 80vh;
    left: 85vw;
    // 设置动画延迟
    animation-delay: 4s;
}

.square li:nth-child(4) {
    top: 10vh;
    left: 70vw;
    // 设置动画延迟
    animation-delay: 6s;
}

.square li:nth-child(5) {
    top: 10vh;
    left: 10vw;
    // 设置动画延迟
    animation-delay: 8s;
}

.circle li {
    bottom: 0;
    left: 15vw;
    // 执行动画
    animation: circle 10s linear infinite;
    opacity: 0;
}

.circle li:nth-child(2) {
    left: 35vw;
    // 设置动画延迟
    animation-delay: 2s;
}

.circle li:nth-child(3) {
    left: 55vw;
    // 设置动画延迟
    animation-delay: 4s;
}

.circle li:nth-child(4) {
    left: 75vw;
    // 设置动画延迟
    animation-delay: 6s;
}

.circle li:nth-child(5) {
    left: 90vw;
    // 设置动画延迟
    animation-delay: 8s;
}




// 定义动画
@keyframes square {
    0% {
        transform: scale(0) rotateY(0deg);
        opacity: 1;
    }

    100% {
        transform: scale(5) rotateY(1000deg);
        opacity: 0;
    }
}

@keyframes circle {
    0% {
        transform: scale(0) rotateY(0deg);
        opacity: 1;
        bottom: 0;
        border-radius: 0%;
    }

    100% {
        transform: scale(5) rotateY(1000deg);
        opacity: 0;
        bottom: 90vh;
        border-radius: 50%;
    }
}